Draft motor



June 28, 1932; P. GIORGIO 1,864,998

DRAFT MOTOR Filed Nov. 28, 1931 2 Sheets-Sheet 1 INVENTOR,

rep vino 6i0r $0.; .BY

M ATTORNEYS.

Patented June 28, 1932,

PATENT OFFICE *PEPPINO GIORG IO, OF EAST CHICAGO, INDIANA DRAFT moron Application filed November'28, 1931. Serial No, 577,813.

This invention relates toa draft motor.

An object of my invention is the construction of a simple and efficient draft motor whereby a maximum amount of power is i procured'at a minimum expense.

Another object of my invention is the construction of a motor including a heated fine or stack unit, a branch leading therefrom and a motor unit connected to said branch, all be- 1 ing necessary in producing a highly success ful and eflicient means for deriving power at a minimum expense.

A still further object of my invention is the construction of an apparatus in which an efficient, heated draft is utilized in conjunction with a motor unit, associated in a novel -manner therewith, for obtaining a substantial perpetual operation of the motor unit at practically no expense for maintenance or upkeep, notwithstanding the apparatus will have a long and successful period of operation.

lVith the foregoing and other objects in view, my invention comprises certain novel constructions, conbinations and arrangements of parts as will be hereinafter fully described, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims.

In the drawings: v Figure 1 is a view in front elevation of a draft motor constructed in accordance with the present invention. Figure 2 is an enlarged, vertical, longitudinal, sectional view of the motor unit of the draft motor.

shown in Fig. 2, while Figure 4 is a similar view with the control plates removed.

Figure 5 is an enlarged sectional View taken on line 5-5, Figure 2 and looking in the di rection of the arrows.

Figure 6 is an enlarged perspective view of the saddle bracket.

Figure 7 is an enlarged fragmentary perspective view of the inner end of the shaft.

Figure 8 is a fragmentary plan view of the propeller. V

Figure 9 is a view in side elevation of another embodiment of the draft motor.

Figure 10 is a front view of another embodiment of the draft motor. 7

Referring to the drawings by numerals, 1 designates the heating unit, 2 is the heated stack unit, 8 is the branch unit and i is the motor unit of the draft motor. The heating unit may be of any type of a stove, burner or V, furnace, whereby it has been found by experience a better draft is created in the stack unit 2.

The motor unit 4 comprises a hollow base 5 which supports the cylindrical casing 6. The upper end of easing 6 is closed by the as branchunit 3 which is usually a pipe. On the lower horizontal end of casing 6 is formed two outwardly extending integral bracket plates 7, each provided with vertically extending ears 8. Each ear is provided with an aperture 9 for the purpose hereinafter specified. Movable control plates 10 are placed against the inlet end of casing 6, in engagement with the bracket plates 7. Each control plate (Fig. 3) is provided near opposite edges with elongated slots 11. Bolts 12 extend through the apertures 9 and slots 11, with butterfly nuts 13 thereon, whereby the control plates can be brought together, or separated, M and held in their adjusted position, for con- '80 trolling the amount of air entering casing 6. Each control plate 10 is provided with a grip 14: parallel with and positioned between the pair of cars 15 on said plate. By means of these grips 14, the operator can easily adjust the position of the control plates upon Figure 3 is a front view of the motor unit motor 1 In the cylindrical curved casing 6 is placed a saddle bracket 16 which comprises a flat straight body 17 provided at its ends with curved, inwardly and downwardly extending flat legs 18. The flat body 17 is provided with two aligned slots 19, and each leg is provided with a longitudinally extending slot 20. The legs 18 engage the inner curved face of the casing 6 (Fig. 5) and bolts 21 extend through the casing and slots 20, holding the saddle bracket in an adjusted position, but permitting the operator'to adjust the bracket, by

a sliding action, for assisting in accurately centering or positioning the horizontal shaft 22. A slidable ball bearing 23 is seated on the flat body 17, with bolts 24: extending therethrough and also through the elongated slots 19, whereby the bearing 23 can be bodily adjusted longitudinally of the saddle bracket for further adjustment of shaft 22, to obtain a perfect or extremely accurate positioning of the shaft in the motor. An oil pipe 25, carrying a cup 26, is extended through casing 6 and discharges at its inner end into the bearing 23 for perfectly lubricating the bearing and its shaft 22. Shaft 22 is also journalled in a bearing 27, supported upon the outside of the base 5 (Fig. 2) this shaft 22 is further journalled in bearing 28, on post 29. A balance or fly wheel 30 is mounted on the shaft 22, as well as a belt wheel 31. The belt wheel 31 could be any kind of ordinary means for taking the power from shaft 22 and driving or operating any suitable machincry (not shown).

The propeller 32 is provided with a square aperture 33 (Fig. 8) whereby the propeller fits upon the square portion 34 of the shaft '22 (Fig. 7), and by suitable nuts, the propeller is held in place.

In the embodiment shown in Fig. 9, the motor unit 4: is connected directly to the stack 35. Any suitable means may be used in this embodiment to heat the stack, to greatly increase the draft and thereby the efficient operation of the motor unit.

In the embodiment shown in Fig. 10, the stack 36 has the heating unit 1 connected thereto by a branch 37 with abranch 38 connected at its lower end to the motor unit 4-. In Figs. 9 and 10, the motor units at preferably rest upon bases 39. In detail construction, the motor unit of embodiments 9 andolO is the same as the motor unit shown in Figs. 1 and 2.

From extensive experience with a draft motor, as herein described, it. has been found that heating the stack greatly increases the draft action on the propeller 32, which increases the power derived and consequently the value of the motor. By adjusting the control plates, the size of the inlet end can be increased or decreased, which operates to control the inflowing air against the blades of the propeller. The propeller will continuously revolve as long as there is any draft and consequently, when it is desired to inspect the motor unit, or repair any part thereof, the propeller can be stopped from rotating by raising the vent slide 40, to open the vent opening 41, on stack 2, Fig. 1, which will stop the draft through the casing 6 and thereby the operator can easily stop the propeller when desired. This vent device on the stack (constituted by opening 41 and slide 40) acts as a brake on the motor, when it is desired to stop the propeller and its shaft from rotating. Thorough tests have been given this draft motor, and the essential units of the combination have been found to produce an apparatus of high efficiency. Further, the inexpensive maintenance of the draft motor is of great importance, since power can be procured at a minimum cost.

While I have described the preferred embodiments of my invention and illustrated the same in the accompanying drawings, certain minor changes or alterations may appear to one skilled in the art to which this inven tion belongs, during the extensive manufacture of the same, and I, therefore, reserve the right to make such changes or alterations as shall fairly fall within the scope of the appended claims.

What I claim is:

1. In a draft motor, the combination with a stack, of a motor unit communicating with said stack, said motor unit comprising a casing provided on its outer end with a pair of outwardly extending vertically positioned bracket plates integral therewith, each bracket plate provided with an upwardly and downwardly extending ear formed in the same vertical plane, control plates laid flat against said bracket plates, each control plate provided near opposite ends with elongated slots and with parallel ears, said slots and ears over the ears of said bracket plates, bolt-s extending through the ears of said bracket plates and the elongated slots of said control plates for securing the control plates in an adjusted position upon said bracket plates,

each control plate provided with aigrip parallel with and between the ears on said plate, and a shaft provided with a propeller in said casing, substantially as shown and described.

2. In a draft InOtOI'ft-hG combination with a stack, of a motor unit communicating with said stack, said motor unit comprising a casing, an adjustable saddle bracket mounted in said casing, means on said bracket and casing for holding said bracket in an adjusted position, a slidable ball bearing on said saddle bracket, a ball bearing outside of said casing, a shaft journalled on said ball bearings, and a propeller fixedly secured to said shaft within said casing.

3. In a draft motor, the combination with stack, of a motor unit connected to said stack, said motor unit comprising a cylindrical curved casing, a saddle bracket in said casing, said saddle bracket comprising a flat straight body provided at its ends with down wardly and inwardly extending flat legs, said legs conforming to the shape of and against the curved inner face of said cylindrical casing, said fiat straight body provided with aligned elongated slots, each of said legs pro-- vided with a longitudinally extending slot, fastening means extending through said casing and said slots of the legs securing the saddle bracketin an adjusted position upon said casing, a slidable ball bearing on said flat signature.

PEPPINO GIORGIO. 

